While I was messing around with the PRo all dismantled, I clearly saw why our #3 on the KB is brighter than the rest. And also why the whole KB is unevenly lid. Heres the pics to show why. And to conclude... there is no way to have a perfect back lid Pro because of how the KB is lit up. The red circle is where the number 3 is on the KB. See that lightsource....? Thats why 3 is always lit birghtly.